Analysis of Radiation Thermometry Errors in Gas Turbine Combustors Under Different Spectral Bands

FAN Yuqi; LIAO Zhihong; JIN Qiwen; LIN Zhiming; XUE Zhiliang; ZHOU Yonggang; ZHANG Yongxin; WU Xuecheng

doi:10.19805/j.cnki.jcspe.2025.240333

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Analysis of Radiation Thermometry Errors in Gas Turbine Combustors Under Different Spectral Bands

更新时间：2026-10-10

- Analysis of Radiation Thermometry Errors in Gas Turbine Combustors Under Different Spectral Bands
- Chinese Journal of Power Engineering Vol. 45, Issue 8, Pages: 1211-1218(2025)
- 作者机构：
  
  1. 浙江大学能源高效清洁利用全国重点实验室,浙江,杭州,310027
  2. 浙江大学嘉兴研究院,浙江,嘉兴,314000
- 作者简介：
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2025.240333
  CLC：
- Online First：12 August 2025，
  
  Published：2025
- 稿件说明：
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樊雨骐,廖志弘,金其文,林志明,薛志亮,周永刚,张涌新,吴学成. 不同波段下燃气轮机燃烧室辐射测温误差分析动力工程学报, 2025, 45(8): 1211-1218 https://doi.

org/10.19805/j.cnki.jcspe.2025.240333
樊雨骐,廖志弘,金其文,林志明,薛志亮,周永刚,张涌新,吴学成. 不同波段下燃气轮机燃烧室辐射测温误差分析动力工程学报, 2025, 45(8): 1211-1218 https://doi. DOI： 10.19805/j.cnki.jcspe.2025.240333.

org/10.19805/j.cnki.jcspe.2025.240333 DOI：

摘要

针对燃气轮机燃烧室辐射测温中杂散辐射信号干扰测温准确度的问题

建立了考虑发射率、高温剩余壁面反射、高温燃气吸收/辐射的辐射测温物理模型

并提出求解真实温度的误差修正模型。在红外热像仪3个不同工作波段下

定量分析了模型输入参数的灵敏度指数。结果表明:即使在燃气透射率较高的波段

燃气的影响不可忽略

当忽略燃气影响时

工作波段为短波红外和中波红外的热像仪分别会产生最大9.7%和5.5%的温度误差;不同工作波段下输入参数的灵敏度指数不同

灵敏度指数较小的输入参数允许有较大的测量不确定度

而对于灵敏度指数较大的输入参数

则需要对其进行准确测量。

Abstract

To address the issue of stray radiation signals interfering with measurement accuracy in radiation thermometry of gas turbine combustors

a physical model was established that accounts for emissivity

high-temperature residual wall reflections

and high-temperature gas absorption/radiation. An error correction model for determining true temperatures was subsequently developed. Quantitative sensitivity indexes of model input parameters were analyzed across three distinct operational bands of an infrared thermal imager. Results show that even in spectral bands with high gas transmittance

gas influence remains non-negligible. Neglecting gas effects causes maximum relative errors of 9.7% and 5.5% for short-wave infrared (SWIR) and mid-wave infrared (MWIR) imagers

respectively. Sensitivity indexes of input parameters vary across operational bands. Parameters with lower sensitivity indexes can tolerate greater measurement uncertainties

whereas those with higher indexes require precise measurement.

关键词

Keywords

references

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